/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.evaluation.value;

/**
 * This DoubleValue represents the result of a binary operation on two double values.
 *
 * @author Eric Lafortune
 */
final class CompositeDoubleValue extends SpecificDoubleValue {
    public static final byte ADD = '+';
    public static final byte SUBTRACT = '-';
    public static final byte MULTIPLY = '*';
    public static final byte DIVIDE = '/';
    public static final byte REMAINDER = '%';

    private final DoubleValue doubleValue1;
    private final byte operation;
    private final DoubleValue doubleValue2;

    /**
     * Creates a new composite double value of the two given double values and the given operation.
     */
    public CompositeDoubleValue(DoubleValue doubleValue1, byte operation, DoubleValue doubleValue2) {
        this.doubleValue1 = doubleValue1;
        this.operation = operation;
        this.doubleValue2 = doubleValue2;
    }

    // Implementations for Object.

    public boolean equals(Object object) {
        return this == object
            || super.equals(object) && this.doubleValue1.equals(((CompositeDoubleValue)object).doubleValue1)
                && this.operation == ((CompositeDoubleValue)object).operation
                && this.doubleValue2.equals(((CompositeDoubleValue)object).doubleValue2);
    }

    public int hashCode() {
        return super.hashCode() ^ doubleValue1.hashCode() ^ doubleValue2.hashCode();
    }

    public String toString() {
        return "(" + doubleValue1 + ((char)operation) + doubleValue2 + ")";
    }
}